运行make

Question

我收到以下错误：

  

frameworks / base / core / java / android / os / mypackage / MyServiceListenerClass.java:283:error 110：android.os.mypackage.MyServiceListenerClass.myMethod（）中不可用类型android.os.storage.VolumeInfo的参数< / p>

我创建了一个包含一些类的新包，这些类使用VolumeInfo包中的storage。

我找不到有关此错误的任何文档。我做错了什么？

更新

• 发现Error 110 = UNAVAILABLE_SYMBOL。

• 在doclava / Stubs.java中找到此部分：

  for (ParameterInfo p :  m.parameters()) {
      TypeInfo t = p.type();
      if (!t.isPrimitive()) {
        hiddenClass = findHiddenClasses(t);
        if (null != hiddenClass) {
          if (hiddenClass.qualifiedName() == t.asClassInfo().qualifiedName()) {
            // Parameter type is hidden
            Errors.error(Errors.UNAVAILABLE_SYMBOL, m.position(),
                "Parameter of unavailable type " + t.fullName() + " in " + cl.qualifiedName()
                + "." + m.name() + "()");
          } else {
            // Parameter type contains a generic parameter
            Errors.error(Errors.HIDDEN_TYPE_PARAMETER, m.position(),
                "Parameter uses type parameter of unavailable type " + t.fullName() + " in "
                + cl.qualifiedName() + "." + m.name() + "()");
          }
        }
      }
  }
  

Answer 1

因此出现此错误的原因是@hide文档部分底部的VolumInfo属性：

/**
 * Information about a storage volume that may be mounted. A volume may be a
 * partition on a physical {@link DiskInfo}, an emulated volume above some other
 * storage medium, or a standalone container like an ASEC or OBB.
 * <p>
 * Volumes may be mounted with various flags:
 * <ul>
 * <li>{@link #MOUNT_FLAG_PRIMARY} means the volume provides primary external
 * storage, historically found at {@code /sdcard}.
 * <li>{@link #MOUNT_FLAG_VISIBLE} means the volume is visible to third-party
 * apps for direct filesystem access. The system should send out relevant
 * storage broadcasts and index any media on visible volumes. Visible volumes
 * are considered a more stable part of the device, which is why we take the
 * time to index them. In particular, transient volumes like USB OTG devices
 * <em>should not</em> be marked as visible; their contents should be surfaced
 * to apps through the Storage Access Framework.
 * </ul>
 *
 * @hide
 */

删除它可以解决问题。